Trish, currently we use Ultrathon Insect Repellent 8. DEET is approx. 25% so it's fairly low, but supposedly it was created for the military. We use a stronger version in the areas where the resorts are remote and they don't spray a lot. One year, only Skin So Soft saved me from absolute torture on a dive trip. You never know. If you're going to a good sized resort, they will probably spray that area & it really does make a difference. Just go inside during the bug hours, i.e., 4 p.m. dusk to sunset. Works every time! - Michele P.S. Editing to say, the sand fleas are the absolute worst during the bug hours referenced.